Ireland says the changes made behind the scenes by manager Mark Hughes in regards to training have helped the players push towards a spot in Europe for next season.
"We're all feeling strong at this stage of the season, rather than taking a dip, which is a brilliant feeling," Ireland said on the club's official website.
"We want to end on a high, and right now I feel the best I have ever felt. I feel fitter now than before.
"I am coming off at the end of games feeling that I could have run so much more. I hope that I feel the same going into the derby (against Manchester United)."